Modeling and Propagation of Quality Parameters in Engineering Geodesy Processes in Civil Engineering

Abstract

Quality assurance in civil engineering is a complex and multifaceted field. Especially for successful automation it plays an important role. One aspect of the quality assurance relates to the geometry of a building. In order to determine and control geometric elements, measurement and evaluation processes of engineering geodesy have to be integrated into the construction processes. So the task of engineering geodesy is to create the basis for bringing the planned building geometry in quality-assured reality.

One way to describe the quality is to define a quality model, which describes the quality on the basis of characteristics, which are substantiated by parameters. In generally the characteristics and the parameters are derived from the requirements.

For engineering geodesy processes in civil engineering a process- and product-oriented quality model consisting of the characteristics “accuracy”, “correctness”, “completeness”, “reliability” and “timelessness” was build. These five characteristics are substantiated by altogether ten parameters. In addition to the well-known parameters like “standard deviation” in geodesy and “tolerance” in civil engineering, other parameters like “number of missing elements” and “condition density” help to have a complete and detailed description of the quality of the geometry of a building and the related processes. The parameters can be differentiated in process- and product-related parameters. Finally the quality parameters can be analyzed to get a significant statement about the actual reached quality within the process.